Accession Number:

AD0688782

Title:

ABOUT USE OF THE KINETIC ENERGY OF THE STREAM OF A TURBOJET ENGINE FOR CREATION OF ADDITIONAL LIFT ON THE WING OF AN AIRCRAFT,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1969-03-06

Pagination or Media Count:

20.0

Abstract:

The results are given of the experimental investigations of the pressure distribution over the surfaces of a plane-plate wing and a wing with a 12.5 percent relative thickness, both located inside a flow at various angles of attack and temperature, and at various flow speeds. In the investigations carried out under static conditions, during which a plane gas jet was fed tangentially to the upper wing surface at the point of the maximum airfoil thickness, even assuming a jet-aircraft lift-drag ratio of 10, it was found to be feasible to obtain supplementary lift up to 21 percent of momentum by deflecting the outlet momentum vector by up to 12 degrees. The deflection can be effected by deflecting jet engine nozzles or by utilizing the Coanda effect. It is concluded that the flying-engine configuration, i. e., the engine-wing combination in which exhaust gases are conveyed in wing slots, is feasible and that the design should be investigated in drifting flow. Author

Subject Categories:

  • Aerodynamics
  • Aircraft
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE